new tranny installed
 

i recently installed a new tranny in my fd, well rebuilt, but the 1st and 2nd gears grind while i drive or is this normal because the tranny wasnt driven for a while or is it messed up?
i also changed the oil in it before i installed it i used valvoline 75-90

Not normal...................it's messed up.

If you know who rebuilt it I would take it back.

If you bought it & was told it was rebuilt, you were ripped off.